import { faker } from '@faker-js/faker';
import { serializeUserSecurely } from '@growi/core/dist/models/serializers';
import type { Response } from 'express';
import { mock } from 'vitest-mock-extended';

import { SCOPE } from '~/interfaces/scope';
import type Crowi from '~/server/crowi';
import type UserEvent from '~/server/events/user';
import { AccessToken } from '~/server/models/access-token';

import type { AccessTokenParserReq } from './interfaces';

import { accessTokenParser } from '.';


vi.mock('@growi/core/dist/models/serializers', { spy: true });


describe('access-token-parser middleware', () => {

  let User;

  beforeAll(async() => {
    const crowiMock = mock<Crowi>({
      event: vi.fn().mockImplementation((eventName) => {
        if (eventName === 'user') {
          return mock<UserEvent>({
            on: vi.fn(),
          });
        }
      }),
    });
    const userModelFactory = (await import('../../models/user')).default;
    User = userModelFactory(crowiMock);
  });

  it('should call next if no access token is provided', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();

    // act
    await accessTokenParser()(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeUndefined();
    expect(serializeUserSecurely).not.toHaveBeenCalled();
    expect(nextMock).toHaveBeenCalled();
  });

  it('should call next if the given access token is invalid', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();

    // act
    reqMock.query.access_token = 'invalidToken';
    await accessTokenParser()(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeUndefined();
    expect(serializeUserSecurely).not.toHaveBeenCalled();
    expect(nextMock).toHaveBeenCalled();
  });

  it('should set req.user with a valid api token in query', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();

    // prepare a user with an access token
    const targetUser = await User.create({
      name: faker.person.fullName(),
      username: faker.string.uuid(),
      password: faker.internet.password(),
      lang: 'en_US',
      apiToken: faker.internet.password(),
    });

    // act
    reqMock.query.access_token = targetUser.apiToken;
    await accessTokenParser()(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeDefined();
    expect(reqMock.user?._id).toStrictEqual(targetUser._id);
    expect(serializeUserSecurely).toHaveBeenCalledOnce();
    expect(nextMock).toHaveBeenCalled();
  });

  it('should set req.user with a valid api token in body', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();

    // prepare a user with an access token
    const targetUser = await User.create({
      name: faker.person.fullName(),
      username: faker.string.uuid(),
      password: faker.internet.password(),
      lang: 'en_US',
      apiToken: faker.internet.password(),
    });

    // act
    reqMock.body.access_token = targetUser.apiToken;
    await accessTokenParser()(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeDefined();
    expect(reqMock.user?._id).toStrictEqual(targetUser._id);
    expect(serializeUserSecurely).toHaveBeenCalledOnce();
    expect(nextMock).toHaveBeenCalled();
  });

});


describe('access-token-parser middleware for access token with scopes', () => {

  let User;

  beforeAll(async() => {
    const crowiMock = mock<Crowi>({
      event: vi.fn().mockImplementation((eventName) => {
        if (eventName === 'user') {
          return mock<UserEvent>({
            on: vi.fn(),
          });
        }
      }),
    });
    const userModelFactory = (await import('../../models/user')).default;
    User = userModelFactory(crowiMock);
  });

  it('should authenticate with no scopes', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();

    // prepare a user
    const targetUser = await User.create({
      name: faker.person.fullName(),
      username: faker.string.uuid(),
      password: faker.internet.password(),
      lang: 'en_US',
    });

    // generate token with read:user:info scope
    const { token } = await AccessToken.generateToken(
      targetUser._id,
      new Date(Date.now() + 1000 * 60 * 60 * 24),
    );

    // act
    reqMock.query.access_token = token;
    await accessTokenParser()(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeDefined();
    expect(reqMock.user?._id).toStrictEqual(targetUser._id);
    expect(serializeUserSecurely).toHaveBeenCalledOnce();
    expect(nextMock).toHaveBeenCalled();
  });

  it('should authenticate with specific scope', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();

    // prepare a user
    const targetUser = await User.create({
      name: faker.person.fullName(),
      username: faker.string.uuid(),
      password: faker.internet.password(),
      lang: 'en_US',
    });

    // generate token with read:user:info scope
    const { token } = await AccessToken.generateToken(
      targetUser._id,
      new Date(Date.now() + 1000 * 60 * 60 * 24),
      [SCOPE.READ.USER.INFO],
    );

    // act
    reqMock.query.access_token = token;
    await accessTokenParser()(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeDefined();
    expect(reqMock.user?._id).toStrictEqual(targetUser._id);
    expect(serializeUserSecurely).toHaveBeenCalledOnce();
    expect(nextMock).toHaveBeenCalled();
  });

  it('should reject with insufficient scopes', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();


    // prepare a user
    const targetUser = await User.create({
      name: faker.person.fullName(),
      username: faker.string.uuid(),
      password: faker.internet.password(),
      lang: 'en_US',
    });

    // generate token with read:user:info scope
    const { token } = await AccessToken.generateToken(
      targetUser._id,
      new Date(Date.now() + 1000 * 60 * 60 * 24),
      [SCOPE.READ.USER.INFO],
    );

    // act - try to access with write:user:info scope
    reqMock.query.access_token = token;
    await accessTokenParser([SCOPE.WRITE.USER.INFO])(reqMock, resMock, nextMock);

    // // assert
    expect(reqMock.user).toBeUndefined();
    expect(serializeUserSecurely).not.toHaveBeenCalled();
    expect(nextMock).toHaveBeenCalled();
  });

  it('should authenticate with write scope implying read scope', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    expect(reqMock.user).toBeUndefined();

    // prepare a user
    const targetUser = await User.create({
      name: faker.person.fullName(),
      username: faker.string.uuid(),
      password: faker.internet.password(),
      lang: 'en_US',
    });

    // generate token with write:user:info scope
    const { token } = await AccessToken.generateToken(
      targetUser._id,
      new Date(Date.now() + 1000 * 60 * 60 * 24),
      [SCOPE.WRITE.USER.INFO],
    );

    // act - try to access with read:user:info scope
    reqMock.query.access_token = token;
    await accessTokenParser([SCOPE.READ.USER.INFO])(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeDefined();
    expect(reqMock.user?._id).toStrictEqual(targetUser._id);
    expect(serializeUserSecurely).toHaveBeenCalledOnce();
    expect(nextMock).toHaveBeenCalled();
  });

  it('should authenticate with wildcard scope', async() => {
    // arrange
    const reqMock = mock<AccessTokenParserReq>({
      user: undefined,
    });
    const resMock = mock<Response>();
    const nextMock = vi.fn();

    // prepare a user
    const targetUser = await User.create({
      name: faker.person.fullName(),
      username: faker.string.uuid(),
      password: faker.internet.password(),
      lang: 'en_US',
    });

    // generate token with read:user:* scope
    const { token } = await AccessToken.generateToken(
      targetUser._id,
      new Date(Date.now() + 1000 * 60 * 60 * 24),
      [SCOPE.READ.USER.ALL],
    );

    // act - try to access with read:user:info scope
    reqMock.query.access_token = token;
    await accessTokenParser([SCOPE.READ.USER.INFO, SCOPE.READ.USER.API.ACCESS_TOKEN])(reqMock, resMock, nextMock);

    // assert
    expect(reqMock.user).toBeDefined();
    expect(reqMock.user?._id).toStrictEqual(targetUser._id);
    expect(serializeUserSecurely).toHaveBeenCalledOnce();
    expect(nextMock).toHaveBeenCalled();
  });

});